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Unformatted text preview: time Signals Continuous ‐ time signals: value is concerned continuously with time or space (different from continuous function ‐ continuous: with respect to value) Discrete ‐ time signals: values are concerned or defined only at discrete ‐ time instants (different from quantized signal whose value only has a finite resolution) ‐ can be obtained by sampling continuous time signal or directly defined by the application Example 1 ‐ 5: the unit pulse and unit step signals ߜሾ݊ሿ ൌ ቄ 1, ݊ ൌ 0 0, ݐ݄݁ݎݓ݅ݏ݁ ݑሾ݊ሿ ൌ ቄ 1, ݊ ൌ 0 0, ݊ ൏ 0 What are given by ሾ݊ሿ ൌ ݑሾ݊ሿ െ ሾ݊ െ 5ሿ?...
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 Spring '11
 zhicheng

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